Johan Hellgren

Bias of feedback cancellation algorithms based on direct closed loop identification

Urban Forssell, Johan Hellgren, 2000, 2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100).

Bias of feedback cancellation algorithms in hearing aids based on direct closed loop identification

Urban Forssell, Johan Hellgren, U. Forssell, 2001, IEEE Trans. Speech Audio Process..

A method of reducing reduce power consumption of a digital filter bank by the number of multiplications

Thomas Lunner, Johan Hellgren, 1991 .

Analysis of feedback cancellation in hearing aids with Filtered-x LMS and the direct method of closed loop identification

Johan Hellgren, J. Hellgren, 2002, IEEE Trans. Speech Audio Process..